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Author: Jaime Bautista Ortega
Publisher:
ISBN:
Category : Broilers (Chickens)
Languages : en
Pages : 254
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Book Description
Three experiments were conducted in broiler hens to study the influence of dietary n-3 polyunsaturated fatty acids (PUFA) on egg quality, antioxidant status in progeny, and eicosanoid production in tissue. The objective of experiment 1 was to determine the effect of hen age and dietary n-3 PUFA on egg quality and hatchability. Two-hundred-twenty breeder chicks (males and females) (Cobb Breeders) were raised until 20 weeks of age following the company guidelines. At this age, 3 groups of birds (24 breeder hens and 3 roosters) were randomly allocated to one of the following dietary treatments: 3.5% sunflower oil (Low n-3 diet), 1.75% sunflower oil + 1.75% fish oil (Medium n-3 diet) or 3.5% fish oil (High n-3 diet). Egg quality was evaluated at 29, 37 and 45 weeks of age by determining total egg weight, its components (albumen, yolk and shell) and shell thickness. Total fat content in the yolk and its fatty acid profile was also determined. Egg production was recorded daily. Breeder hens fed the High n-3 diet laid lighter eggs with lighter yolks, albumens and shells than those fed the Medium and Low n-3 diets (p
Author: Jaime Bautista Ortega
Publisher:
ISBN:
Category : Broilers (Chickens)
Languages : en
Pages : 254
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Book Description
Three experiments were conducted in broiler hens to study the influence of dietary n-3 polyunsaturated fatty acids (PUFA) on egg quality, antioxidant status in progeny, and eicosanoid production in tissue. The objective of experiment 1 was to determine the effect of hen age and dietary n-3 PUFA on egg quality and hatchability. Two-hundred-twenty breeder chicks (males and females) (Cobb Breeders) were raised until 20 weeks of age following the company guidelines. At this age, 3 groups of birds (24 breeder hens and 3 roosters) were randomly allocated to one of the following dietary treatments: 3.5% sunflower oil (Low n-3 diet), 1.75% sunflower oil + 1.75% fish oil (Medium n-3 diet) or 3.5% fish oil (High n-3 diet). Egg quality was evaluated at 29, 37 and 45 weeks of age by determining total egg weight, its components (albumen, yolk and shell) and shell thickness. Total fat content in the yolk and its fatty acid profile was also determined. Egg production was recorded daily. Breeder hens fed the High n-3 diet laid lighter eggs with lighter yolks, albumens and shells than those fed the Medium and Low n-3 diets (p
Author: Vincenzo Tufarelli
Publisher: MDPI
ISBN: 3039438530
Category : Science
Languages : en
Pages : 754
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Book Description
The aim of this Special Issue is to publish high quality papers concerning poultry nutrition and the interrelations between nutrition, metabolism, microbiota and the health of poultry. Therefore, I invite submissions of recent findings, as original research or reviews, on poultry nutrition, including, but not limited to, the following areas: the effect of feeding on poultry meat end egg quality; nutrient requirements of poultry; the use of functional feed additives to improve gut health and immune status; microbiota; nutraceuticals; soybean meal replacers as alternative sources of protein for poultry; the effects of feeding poultry on environmental impacts; the use of feed/food by-products in poultry diet; and feed technology.
Author: Willem Smink
Publisher:
ISBN: 9789461733061
Category :
Languages : en
Pages : 141
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Book Description
Author: Graham C. Burdge
Publisher: Elsevier
ISBN: 012811231X
Category : Science
Languages : en
Pages : 256
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Book Description
Polyunsaturated Fatty Acid Metabolism explores a number of major roles of PUFA in the body, including its role as a component of cell membranes and how it provides substrates for the synthesis of lipid second messengers. Recent studies are unraveling the effect of interactions between diet and endocrine factors and genetic and epigenetic variation on the regulation of PUFA biosynthesis in animals. Together, these recent findings provide novel insights into the impact of differences in PUFA supply on health. This book captures these findings in a manner that marks the state-of-the-art, placing them in the wider context of PUFA metabolism and nutritional science. Users will find a comprehensive discussion on the topic that presents the contributions of leading researchers who combine their knowledge to create a cohesive academic resource for researchers, those involved in production, and health policymakers. - Provides a comprehensive view of polyunsaturated fatty acid metabolism - Describes underlying metabolism on lipids that include polyunsaturated fatty acids - Includes discussions on recent findings on the genetic and epigenetic regulation of polyunsaturated fatty acid metabolism
Author: Tania Emmanuelle Torchon
Publisher:
ISBN:
Category :
Languages : en
Pages : 108
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Book Description
Compared to rodents, broiler chickens, those reared for meat, are an attractive model for studies of adipose biology, and obesity development in children. The broiler chicken lacks the gene for uncoupling protein 1, the hallmark for brown adipose tissue making them a useful model to study lipid metabolism in white adipocytes. Two studies were performed to investigate if white adipose tissue had the metabolic ability for fatty acid oxidation (FAO), and to investigate the effects of dietary fatty acids on abdominal fat development of young broiler chickens as a model for childhood obesity. In study one, chickens were fasted for three, five, and seven hours. Afterwards, the oxidative flux from the citric acid cycle, and the citrate synthase enzyme activity were measured in white adipose tissue. In study two, young Cobb500 broilers, from age seven to 21 days, were fed isocaloric diets prepared using lard (primarily saturated), corn oil (primarily monounsaturated), flaxseed oil (enriched in alpha linolenic acid (ALA, 18:3, n-3)), or fish oil (enriched in eicosapentaenoic acid (EPA, 20:5, n-3) and docosahexaenoic acid (DHA, 22:6, n-3)), at 8% fat by weight. Physical characteristics, abdominal adipocyte histology, and abdominal adipose tissue gene expression profiles were altered due to dietary fatty acids. Collectively our studies confirm that white adipose tissue has the capacity to increase local FAO by increasing expression of key regulatory enzymes and proteins. Further, by altering the type of fatty acids consumed during childhood, adipose deposition and adipocyte size can be attenuated. These data confirm that FAO can be induced locally in white adipose tissue, dietary long chain n-3 polyunsaturated fatty acids promote reduced adipocyte size, and finally that these data could offer new therapeutic targets to reduce fatness in chickens and children.
Author: Reza Poureslami
Publisher: LAP Lambert Academic Publishing
ISBN: 9783838376998
Category :
Languages : en
Pages : 212
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Book Description
The current dietary recommendations for reducing the risk of cardiovascular diseases underline I) increasing MUFA intake (mainly 18:1n-9) at the expense of SFA intake (mainly 16:0) and II) increasing n-3 LC PUFA intake. Chicken egg and meat are natural sources of n-3 LC PUFA, and their consumption contributes to the intake of these semi-essential nutrients. Many efforts have been made to improve their fatty acid composition however, some aspects remain uncertain. The specific objectives of the present PhD thesis were [1] to study metabolism of fatty acids (accumulation and bioconversion efficiency) in broiler chickens and the impact of dietary fatty acids composition, and animal factors on the fatty acid metabolism, [2] to study the effect of animal factors together with diet on the fatty acid composition of muscles and organs in broiler chickens and [3] to study the interaction effects of dietary fatty acids on the egg yolk fatty acid composition. To fulfill these objectives, three experiments were carried out of which one trial was performed on broiler chicken and the two others on laying hens.
Author: Bruce Alan Watkins
Publisher:
ISBN:
Category :
Languages : en
Pages : 330
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Book Description
Author: Doug Korver
Publisher:
ISBN:
Category :
Languages : en
Pages : 500
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Book Description
Author: Brian A. Head
Publisher:
ISBN:
Category : Broilers (Chickens)
Languages : en
Pages : 111
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Book Description
In broiler chickens, hepatic lipid metabolism plays a significant role in whole body and muscle fatty acid (FA) incorporation. Flax seed is a rich source of [alpha]-linolenic acid and can be used to increase n-3 FA in poultry meat. Previous studies have shown that flax seed in combination with carbohydrase enzymes in broiler diets enhances long chain (LC) n-3 FA in hepatic tissue. Three experiments were conducted to evaluate the effect of flax seed and carbohydrase enzyme addition on production performance, total tract lipid digestibility, hepatic fatty acid composition, liver lipid class distribution and lipid metabolism in broiler chickens. In Experiment 1, broiler chicks were placed in individual cages and fed isocaloric, isonitrogenous corn-soy diets: Control, Flax (10% flax), and Flax+E (Flax+0.05% enzyme). The diets were fed for a period of 42 days. Total tract digestibility of lipids and FA were assessed from day 19 to 21 of growth. There was no effect of diet on production performance characteristics, including final body weight (BW) or yield of cut-up parts. Flax-based diets reduced total tract lipid digestibility (p
Author: Jie Wen
Publisher: Frontiers Media SA
ISBN: 2889764214
Category : Science
Languages : en
Pages : 158
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Book Description
